JPH0359196A - Freshness-preserving paper and its production - Google Patents
Freshness-preserving paper and its productionInfo
- Publication number
- JPH0359196A JPH0359196A JP19216689A JP19216689A JPH0359196A JP H0359196 A JPH0359196 A JP H0359196A JP 19216689 A JP19216689 A JP 19216689A JP 19216689 A JP19216689 A JP 19216689A JP H0359196 A JPH0359196 A JP H0359196A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- water
- freshness
- water absorption
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 15
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 239000002250 absorbent Substances 0.000 claims description 10
- 230000002745 absorbent Effects 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 235000013311 vegetables Nutrition 0.000 abstract description 11
- 239000010419 fine particle Substances 0.000 abstract description 4
- 229920001577 copolymer Polymers 0.000 abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 208000019901 Anxiety disease Diseases 0.000 abstract 1
- 230000036506 anxiety Effects 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 42
- 239000011111 cardboard Substances 0.000 description 7
- 238000010030 laminating Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 2
- 239000003623 enhancer Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229940047670 sodium acrylate Drugs 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 241000208822 Lactuca Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002761 deinking Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Packages (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、吸水性を有する吸水紙に関するもので、特に
水を表面に付着し、または水蒸気を発散する野菜類やそ
の他生群食品、冷凍品などを輸送するに際し使用される
吸水性のある鮮度保持紙に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to water-absorbing paper that has water-absorbing properties, and is particularly applicable to vegetables and other raw foods and frozen foods that attach water to their surfaces or emit water vapor. It relates to water-absorbent freshness-preserving paper used when transporting goods.
（従来の技術）
従来、野菜類などは、畠で収穫しながら直ちに輸送用の
段ボール箱に詰められるもの、土などを洗い流して一定
量宛束ねて段ボール箱に詰めるものなどがあり、水分を
吸収させるため新聞紙などを野菜間に詰めて輸送し、さ
らには生鮮度を保つために包装箱内に氷などを入れた袋
を入れ野菜、花舟や果物を輸送することがあるが、発生
する水滴を吸収するため新聞紙などを包装箱に敷くなど
して来た。(Conventional technology) In the past, vegetables and other vegetables were harvested in the field and immediately packed into cardboard boxes for transportation, while others were washed to remove soil, etc. and then bundled into a certain amount and packed in cardboard boxes. In order to prevent moisture, newspapers are packed between the vegetables during transportation, and vegetables, flowers, and fruits are sometimes transported in bags filled with ice, etc., inside packaging boxes to maintain freshness. They have lined packaging boxes with newspapers and other materials to absorb the moisture.
然し乍ら、近時アクリル系樹脂などによる固形分の１０
０倍から１０００倍の水を吸収する高吸水性の樹脂が開
発され、これらの樹脂の粒状物を透水性のある紙や不織
布で挾持したシートが水を吸収する下敷として段ボール
箱などの輸送用箱に使用されるようになってきた。However, recently, acrylic resins have a solid content of 10
Highly absorbent resins that absorb 0 to 1000 times more water have been developed, and sheets made by sandwiching particles of these resins between water-permeable paper or nonwoven fabric can be used as water-absorbing underlays for transportation such as in cardboard boxes. It has come to be used for boxes.
（発明が解決しようとする課題）
以上述べた如く、野菜類、花弁、果物などを輸送するに
際し、特に畠で栽培され収穫後直ちに段ボール箱に詰め
られるものは、段ボール箱自体耐水性の良好なものを用
いるが、そのために箱の内面に水滴が付着し、その水が
野菜などに再付着するなどしてその部分が腐敗し傷んで
しまうことがあり、このため吸水性のある紙を敷いたり
、直接野菜などを包むなどしてきたが、紙が水に濡れ破
れ、開封時にこれらの紙を取り除くために手間がか＼っ
たり、内容物を損傷する恐れがあった。(Problems to be Solved by the Invention) As mentioned above, when transporting vegetables, flower petals, fruits, etc., especially those grown in fields and packed into cardboard boxes immediately after harvest, the cardboard boxes themselves have good water resistance. However, because of this, water droplets may adhere to the inside of the box, and the water may re-adhere to vegetables etc., causing the parts to rot and become damaged. However, when the paper gets wet with water and tears, it is time consuming to remove the paper when opening the package, and there is a risk of damaging the contents.
近時、開発された高吸水性樹脂を紙の間に挾持し使用さ
れるようになってきたが、軟かい吸水性のある紙で挟持
せしめるため取扱いにくい、さらに高吸水性樹脂の微粒
末を挾持せしめるため、エンボス加工するなどして紙と
紙を接合せしめ、さらには吸水性のある紙が水を吸収す
ると破れ易いので、その外側を透水性があり水に濡れて
も強い不織布などで包むなどするため高価となることが
さけられず、如何に安価で取扱い易すく、かつ、吸水性
が良好で、吸水した水が包装物に再付着することなく、
かつ破れない吸水性の良好な鮮度保持紙の開発が望まれ
るようになってきた。Recently, developed super absorbent resins have come to be used by sandwiching them between sheets of paper, but since they are sandwiched between soft, water-absorbing papers, they are difficult to handle. In order to hold the paper in place, the paper is joined by embossing, etc. Furthermore, since water-absorbing paper easily tears when it absorbs water, the outside of the paper is wrapped in water-permeable non-woven fabric that is strong even when wet. The product is inexpensive, easy to handle, has good water absorption, and prevents the absorbed water from re-adhering to the package.
It has become desirable to develop freshness-retaining paper that does not tear and has good water absorption properties.
（課題を解決するための手段）
本発明は、特に水滴が多く付着した状態で収穫され、段
ボール箱に詰められて輸送される生鮮野菜類の中敷など
に使用される高吸水性の鮮度保持紙を得ることを目的と
し種々検討の結果、本願出願人が発明し昭和６３年６月
に出願した吸水シートをさらに改良することにより解決
せるもので、すなわち、高吸水性樹脂である例えば、ア
クリル酸ビニルアルコール共重合体、アクリル酸ソーダ
重合体などの合成樹脂ポリマーの微細な球状体または粉
末が、熱可塑性樹脂であるポリエチレン、ポリプロピレ
ンなどを熱可塑性樹脂が溶融状態において相溶性なく、
かつ溶着せずに埋設されたような状態で保持されること
を見出し、吸水シートを得たが、さらに両面より水を吸
収すると共に両面の２枚の紙を吸水または透水性を有し
、かつ湿潤強度の良好な坪量３０〜６０ｇ／ ｒｔｆの
紙を用い、熱可塑性樹脂により貼合せしめるに際し、予
め高吸水性樹脂の微粒末を２枚の紙の貼合面に散布担持
せしめておき、熱可塑性樹脂の溶融膜の両面に該高吸水
性樹脂担持面を圧着、冷却して貼合せしめることに解決
せるものである。なお、本発明の吸水性のある鮮度保持
紙は、木材パルプを使用し、エポキシ系合成樹脂など湿
潤強度を得られる薬品を添加し、サイズ剤を添加せずに
抄造した坪量２０〜６０ｇ／ ｒｒｒの紙を用いればよ
く、熱可塑性樹脂は１０〜５０μの厚さとなるよう、要
求される吸水量により熱可塑性樹脂の両面に保持される
高吸水性樹脂量が増減されるがその量に比例させ、２枚
の紙を貼合でき、剥離しないようにすればよく高吸水性
樹脂量は、全体で３００〜１５００ ｇの水を吸収する
ように担持せしめればよい。(Means for Solving the Problems) The present invention provides a highly water-absorbing freshness-preserving insole for use in insoles for fresh vegetables that are harvested with a lot of water droplets attached, packed in cardboard boxes, and transported. The problem can be solved by further improving the water-absorbing sheet that the applicant invented and applied for in June 1988 after various studies aimed at obtaining paper. Fine spherical bodies or powders of synthetic resin polymers such as acid vinyl alcohol copolymers and sodium acrylate polymers are not compatible with thermoplastic resins such as polyethylene and polypropylene when the thermoplastic resin is in a molten state.
We found that the water-absorbing sheet was able to be held in a buried state without welding, and we obtained a water-absorbing sheet that also absorbs water from both sides and has water-absorbing or water-permeable properties for the two sheets of paper on both sides. When laminating paper with a basis weight of 30 to 60 g/rtf with good wet strength using a thermoplastic resin, fine particles of a super absorbent resin are preliminarily dispersed and supported on the bonding surfaces of the two sheets of paper. The solution is to press the superabsorbent resin supporting surfaces onto both sides of a molten thermoplastic resin film, cool it, and bond them together. The water-absorbing freshness-keeping paper of the present invention has a basis weight of 20 to 60 g/paper made from wood pulp, with the addition of chemicals such as epoxy synthetic resin to obtain wet strength, and without the addition of sizing agents. The amount of super absorbent resin held on both sides of the thermoplastic resin may be increased or decreased depending on the required amount of water absorption, so that the thermoplastic resin has a thickness of 10 to 50μ, but it is proportional to the amount. The amount of superabsorbent resin supported may be such that it can absorb 300 to 1500 g of water in total.
（作 用）
本発明にか＼る吸水性のある鮮度保持紙は、高吸水性樹
脂の微粒子が、紙層と熱可塑性樹脂層との間に保持せし
めてあり、紙層は吸水または透水性を有すると共に湿潤
強度を有する紙または不織布で構成されているので、野
菜などに付着せる水滴は紙層に吸水また紙層を通過し、
高吸水性樹脂に吸収する作用を有し、さらに紙層は湿潤
強度を有しているので、輸送中摩擦されても破れること
を防ぐ作用を有するものである。(Function) In the water-absorbing freshness-keeping paper according to the present invention, fine particles of super-absorbent resin are held between a paper layer and a thermoplastic resin layer, and the paper layer has water-absorbing or water-permeable properties. It is made of paper or non-woven fabric that has both wet strength and wet strength, so water droplets attached to vegetables etc. absorb water into the paper layer or pass through the paper layer.
It has the effect of absorbing into the superabsorbent resin, and furthermore, the paper layer has wet strength, so it has the effect of preventing tearing even if it is rubbed during transportation.
（実 施 例） 本発明を実施例に従って説明する。(Example) The present invention will be explained according to examples.
実施例１゜
針葉樹晒クラフトパルプを主原料とし、耐水強化剤とし
てボリア藁ドエピクロールヒドリンを対バルブ０．５重
量％添加し、無サイズで抄造した坪１４３ｇ／ｎｆの耐
水紙２枚を、溶融ポリエチレンで貼合するに際し、２枚
の耐水紙の貼合面に平均粒径４０μのアクリル酸ソーダ
重合体よりなる高吸水性樹脂の粉末を、それぞれ１平方
米当り約４ｇとなるよう均一に散布し担持せしめ、溶融
ポリエチレンの約３０μの厚さの溶融薄膜を挾持す・る
ように重ね合わせ、圧縮、冷却して鮮度保持紙を得た。Example 1 Two sheets of water-resistant paper of 143 g/nf were made without size, using bleached softwood kraft pulp as the main raw material, adding 0.5% by weight of boria straw epichlorohydrin as a water-resistant reinforcing agent. When laminating with molten polyethylene, powder of a superabsorbent resin made of sodium acrylate polymer with an average particle size of 40μ is uniformly applied to the bonding surfaces of two sheets of waterproof paper so that the amount is about 4g per square meter of each. A molten thin film of molten polyethylene with a thickness of about 30 μm was stacked on top of each other, compressed, and cooled to obtain freshness-retaining paper.
なお、貼合する装置は、Ｔダイを用いクーリングロール
とプレスロールの接点に溶融フィルムが流下し、Ｔダイ
の両側より紙が供給され、貼金紙を製造することのでき
るものを用いればよい。Note that the laminating device may be one that uses a T-die, allows the molten film to flow down to the contact point between the cooling roll and the press roll, and supplies paper from both sides of the T-die to produce pasted paper. .
得られた鮮度保持紙は、坪量約１００ｇ／ ｒｄで、３
３ｃｍＸ５５ｃｍの大きさに切断せるものは、丁度薄い
板紙状をなしているので片方を持っても中途より垂れ下
がることなく、取扱いは容易であり、実際にレタスの雨
、露に濡れたものを段ボール箱に収納するに際し、下敷
または中敷として１枚数いて封をしたのち輸送試験を行
なった結果、水滴は鮮度保持紙が吸水し、水濡れによる
葉の傷みもなく良好であった。The obtained freshness-retaining paper has a basis weight of approximately 100 g/rd and a
The one that can be cut into 3cm x 55cm pieces is exactly like a thin paperboard, so even if you hold it by one end, it won't sag from the middle, making it easy to handle. When storing the leaves in a container, a few sheets were placed as an underlay or an insole, sealed, and a transport test was conducted. As a result, the freshness-preserving paper absorbed water droplets, and the leaves were not damaged due to water exposure.
実施例Ｚ
新聞故紙を脱墨し回収した故紙バルブを用い、耐水強化
剤としてポリアミトビクロールヒドリンを対バルブ０．
４重量％添加し、紙力増強剤としてポリアクリルアマイ
ドを対バルブ０．５重量％添加し抄造した坪量５０ｇ／
ｒｒｆの耐水紙を２枚溶融ポリエチレンを用いて貼合
するに際し、貼合面にアクリル酸、ビニルアルコール共
重合体よりなる高吸水性樹脂の平均粒径１０μの粉末を
３ｇ／ｒｒｆになるようそれぞれ散布担持せしめたのち
、溶融ポリエチレンの約２０μの溶融膜に両側より押付
は圧着したのち冷却し、約１１５ｇ／ｒｒｆの鮮度保持
紙を得た。Example Z A waste paper valve recovered by deinking waste newspaper was used, and polyamitobichlorohydrin was added as a water resistance enhancer to the valve.
4% by weight was added, and 0.5% by weight of polyacrylamide was added to the paper as a paper strength enhancer, and the basis weight was 50g/
When laminating two sheets of rrf waterproof paper using molten polyethylene, powder of a super absorbent resin made of acrylic acid and vinyl alcohol copolymer with an average particle size of 10 μm was applied to the laminating surface at a rate of 3 g/rrf. After being spread and supported, it was pressed onto a molten film of molten polyethylene of about 20 μm from both sides and then cooled to obtain a freshness-retaining paper weighing about 115 g/rrf.
実施例１と同様に、レタスの輸送用段ボールの中敷とし
て使用し、輸送したが、接触面に傷みなく良好であった
。In the same manner as in Example 1, it was used as a cardboard insole for transporting lettuce and was transported, but the contact surface was not damaged and was in good condition.
（発明の効果）
本発明は、以上述べた如く、吸水性または透水性があり
、かつ湿潤強度のある紙を熱可塑性樹脂で貼合しである
ので取扱いは容易であり、また、高吸水性樹脂の粉末を
紙と熱可塑性樹脂膜の間に保持せしめであるので、腐敗
の原因となる包装物の野菜、花卉、果物などの過剰の水
を吸水し、しかも再び包装物を濡らす恐れなく輸送でき
るものである。また、紙自体に剛性があるので、従来品
は薄く、かつ柔軟性が良過ぎるため作業性が悪く、包装
物の形状に従って屈曲するので、特に包装箱の長手方向
の内寸に対し約２０％も長いものを使用する必要があっ
たが、包装箱の内寸と同じ大きさで良いので、それだけ
コスト安となり、さらに両面の紙は湿潤強度が良好であ
り、かつ、熱可塑性樹脂で貼合しであるので、水に濡れ
ても破れたり、剥れたりして包装物に付着する恐れなく
、さらには、水を含んでも破れない性質を利用し、高吸
水性樹脂の吸水量に相当する水を吸水させたのち、該シ
ートを凍結させることにより、保冷紙としても使用でき
るなど有用である。(Effects of the Invention) As described above, the present invention is made by laminating paper with water absorption or water permeability and wet strength with a thermoplastic resin, so it is easy to handle, and it also has high water absorption properties. Since the resin powder is held between the paper and the thermoplastic resin membrane, excess water from packaged vegetables, flowers, fruits, etc., which can cause spoilage, can be absorbed and transported without the risk of re-wetting the packaged items. It is possible. In addition, because the paper itself has rigidity, conventional products are thin and too flexible, making them difficult to work with, and bending according to the shape of the package, which is about 20% of the inner dimension of the packaging box in the longitudinal direction. It used to be necessary to use a long piece of paper, but since it only needs to be the same size as the inside size of the packaging box, the cost is reduced accordingly.Furthermore, the paper on both sides has good wet strength, and is laminated with thermoplastic resin. Because it is made of plastic, there is no risk of it tearing or peeling off even if it gets wet and sticking to the package.Furthermore, by taking advantage of its property of not tearing even when it gets wet, it absorbs water equivalent to the amount of water absorbed by super absorbent resin. By absorbing water and then freezing the sheet, it is useful as it can also be used as cold insulation paper.
Claims (2)
紙を２枚熱可塑性樹脂で融着してなる貼合紙において、
紙層間に形成される熱可塑性樹脂層と紙層間に微細な高
吸水性樹脂を保持せしめてなる鮮度保持紙。(1) In a laminated paper made by fusing two sheets of paper with water absorption or water permeability and wet strength with a thermoplastic resin,
Freshness-retaining paper made of a thermoplastic resin layer formed between paper layers and a fine super-absorbent resin held between the paper layers.
２枚の紙の貼合面に予め微細な高吸水性樹脂を散布担持
せしめる工程と、熱可塑性樹脂の溶融膜の両面に２枚の
紙の該高吸水性樹脂担持面すなわち貼合面を圧着、冷却
し貼合せしめる工程とよりなる鮮度保持紙の製造方法。(2) The process of spraying and carrying fine super absorbent resin in advance on the bonding surfaces of two sheets of paper that have water absorption or water permeability and wet strength, and two sheets of paper on both sides of the molten thermoplastic resin film. A method for producing freshness-retaining paper, which comprises the steps of pressing the superabsorbent resin-supporting surface, that is, the bonding surface, of the paper, cooling it, and bonding the paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1192166A JPH0819639B2 (en) | 1989-07-25 | 1989-07-25 | Freshness maintaining paper and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1192166A JPH0819639B2 (en) | 1989-07-25 | 1989-07-25 | Freshness maintaining paper and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0359196A true JPH0359196A (en) | 1991-03-14 |
| JPH0819639B2 JPH0819639B2 (en) | 1996-02-28 |
Family
ID=16286786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1192166A Expired - Lifetime JPH0819639B2 (en) | 1989-07-25 | 1989-07-25 | Freshness maintaining paper and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0819639B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997030911A1 (en) | 1996-02-20 | 1997-08-28 | Ben-Tzur, Israel | Plastic packaging material |
| US6190710B1 (en) | 1996-02-20 | 2001-02-20 | Stepac L.A., The Sterilizing Packaging Company Of L.A., Ltd. | Plastic packaging material |
| CN108455053A (en) * | 2018-02-09 | 2018-08-28 | 刘东华 | A kind of special bacteriostasis, preservation bag of strawberry and its preservation method |
| CN115613386A (en) * | 2022-10-27 | 2023-01-17 | 洛阳菘田农业开发有限公司 | Mushroom freshness retaining packaging paper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274398U (en) * | 1988-11-28 | 1990-06-06 |
-
1989
- 1989-07-25 JP JP1192166A patent/JPH0819639B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274398U (en) * | 1988-11-28 | 1990-06-06 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997030911A1 (en) | 1996-02-20 | 1997-08-28 | Ben-Tzur, Israel | Plastic packaging material |
| US6190710B1 (en) | 1996-02-20 | 2001-02-20 | Stepac L.A., The Sterilizing Packaging Company Of L.A., Ltd. | Plastic packaging material |
| CN108455053A (en) * | 2018-02-09 | 2018-08-28 | 刘东华 | A kind of special bacteriostasis, preservation bag of strawberry and its preservation method |
| CN108455053B (en) * | 2018-02-09 | 2023-09-29 | 刘东华 | Special bacteriostatic fresh-keeping bag for strawberries and fresh-keeping method thereof |
| CN115613386A (en) * | 2022-10-27 | 2023-01-17 | 洛阳菘田农业开发有限公司 | Mushroom freshness retaining packaging paper |
| CN115613386B (en) * | 2022-10-27 | 2023-06-20 | 洛阳菘田农业开发有限公司 | Mushroom fresh-keeping packaging paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0819639B2 (en) | 1996-02-28 |
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